Ripped of an elderly lady, and put her in an unsafe situation

Our elderly 80 year old Aunt drove from Gauteng to Cape Town to visit us and on the way her Nissan broke down 4 times. She ended up being towed from Hanover to Tokai and arrived at 2am- nearly 6 hours later than expected. She took the car to Nissan at Tokai to get it fixed before driving back to Gauteng. Nissan Tokai had the car for three days and they told her they had looked closely at the vehicle and "found nothing wrong" They assured her that the car was safe and ready to drive back. She got as far as Worcester and the car broke down. She was totally stranded and very vulnerable. She spent a fortune paying ANOTHER garage/mechanic and a second night overnight after paying the Nissan garage in Cape Town. It turned out to be an electrical fault and needed an new alternator. How can Nissan do that? It smacks of pure misogyny and ageism. There is no doubt that if she had been a young man they would have been more snappy and focused and taken the whole thing far more seriously. My Aunt is very poor and has bad hearing/ sight so presumably she wasn't assertive or knowledgeable enough and they saw this as an easy way to make a quick buck and fobb off a non-regular client. Ill be leaving this review on Nissan Tokai's googlemaps and emailing them. They should at the very least reimburse her.